package com.lai.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class FeignConfig {

    @Bean
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate requestTemplate) {
                //1、从RequestContextHolder拿到老请求的所有数据
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if(requestAttributes != null){
                    HttpServletRequest request = requestAttributes.getRequest();
                    //获取老请求头里面的cookie
                    String cookie = request.getHeader("Cookie");
                    //同步给新请求
                    requestTemplate.header("Cookie",cookie);
                }

            }
        };
    }
}
